US5257816A - Air bag apparatus for vehicle - Google Patents
Air bag apparatus for vehicle Download PDFInfo
- Publication number
- US5257816A US5257816A US07/796,182 US79618291A US5257816A US 5257816 A US5257816 A US 5257816A US 79618291 A US79618291 A US 79618291A US 5257816 A US5257816 A US 5257816A
- Authority
- US
- United States
- Prior art keywords
- air bag
- acceleration sensors
- inflating means
- bag unit
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
- B60R21/203—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns
- B60R21/2035—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns using modules containing inflator, bag and cover attachable to the steering wheel as a complete sub-unit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/14—Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/14—Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch
- H01H35/147—Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch the switch being of the reed switch type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20576—Elements
- Y10T74/20732—Handles
- Y10T74/20834—Hand wheels
Definitions
- This invention relates to an air bag apparatus to be mounted on a vehicle such as an automobile for the protection of a passenger thereof.
- the air bag apparatus comprises an air bag, an inflating means and an acceleration sensor for controlling the inflating means.
- the inflating means is applied with electric current by the acceleration sensor to generate a gas, thereby inflating the air bag.
- the air bag apparatus for the driver's seat there is conventionally known one in which the air bag and the inflating means are disposed on a steering wheel. In such an arrangement, it is normal practice to dispose the acceleration sensor in a front portion of the vehicle and to electrically connect it to the inflating means by means of a harness.
- the air bag unit by closely disposing the air bag, the inflating means and the acceleration sensor in one place when the simplicity of the electric wiring and the ease of mounting on the vehicle body are considered.
- electrical and mechanical ignition of the inflating means it is preferable to provide a plurality of acceleration sensors in order to increase the reliability.
- the plurality of acceleration sensors are closely disposed in a single place, they are placed in one and the same environmental conditions, thereby giving rise to a possibility of their going out of order all at the same time.
- this invention has an object of providing an air bag apparatus which has disposed therein an air bag, an inflating means and acceleration sensors as a unit in a single place and is easy in mounting on the vehicle body and is highly reliable.
- an air bag apparatus for a vehicle is characterized in that an air bag, an inflating means and acceleration sensors for controlling the inflating means are closely disposed in a single place to constitute an air bag unit and that the acceleration sensors in the air bag unit are made up of a plurality of acceleration sensors of different kinds.
- the plurality of acceleration sensors to be provided in the air bag unit are different in kind, there is little or no possibility of their going out of order all at the same time even if they are placed in the same environmental conditions. As a result, the reliability of the air bag apparatus is improved.
- the inflating means is electrically ignited and each of the acceleration sensors controls the electric charging to the inflating means, it is possible, by constituting them into an air bag unit, to mount it on the vehicle body unit by unit, unlike the one in which each of the acceleration sensors is separately mounted on different parts of the vehicle body. This brings about advantages in that mounting the unit on the vehicle body is facilitated and that the harnesses for wiring each of the acceleration sensors and the inflating means are not required any more.
- the acceleration sensor is provided therein with a movable element which moves at the time of crushing of the vehicle.
- the air bag unit is mounted on the steering wheel, it is advantageous to mount each of the acceleration sensors such that the direction of movement of the movable element becomes parallel to the axis of rotation of the steering wheel because, even though the position of each sensor varies in accordance with steering operation, the direction of movement of the movable element can be maintained constant. It follows that the capacity or characteristics of crushing detection do not vary with the steering operation.
- FIG. 1 is a sectional side view showing an embodiment of this invention
- FIG. 2 is a sectional view taken along the line II--II in FIG. 1;
- FIG. 3 is a circuit diagram of a control circuit for an inflating means which is incorporated into the above-described embodiment
- FIG. 4 is a circuit diagram of an important portion of another embodiment of the control circuit
- FIG. 5 is a perspective view of a control box in the above-described embodiment
- FIG. 6 is a sectional view of a first acceleration sensor in the above-described embodiment
- FIG. 7 is a perspective view of an inside of the first acceleration sensor
- FIG. 8 is an exploded perspective view of component parts of the first acceleration sensor.
- FIG. 9 is a sectional view of a second acceleration sensor of the above-described embodiment.
- numeral 1 denotes a steering shaft
- numeral 2 denotes a base plate of a steering wheel which is provided with a boss portion 2a to be fitted into the steering shaft 1.
- An air bag 5 and an inflating means 6 are mounted on a retainer 4 which is fastened by bolts 3 to the base plate 2.
- a control box 9 which contains therein two pieces of a first and a second acceleration sensors 7, 8 is bolted to boss portions 4a which are fixed to the retainer 4.
- an air bag unit which is made up by closely disposing on the retainer 4 the air bag 5, the inflating means 6 and the first and the second acceleration sensors 7, 8. This air bag unit is mounted on the steering wheel at the retainer 4.
- a lower cover 10 which is fixed to the base plate 2 and an upper cover 11 which is fixed to the retainer 4. It is so arranged that, when a gas is generated through the ignition of the inflating means 6, the air bag 5 is inflated by breaking through the upper cover 11.
- numeral 10a denotes those caps on the lower cover 10 which are provided over operating holes for the above-described bolts 3
- numeral 12 denotes a resin plate for supporting a harness provided on the base plate 2.
- the above-described inflating means 6 is of the type to be electrically ignited. Its control circuit is as shown in FIG. 3.
- the control circuit comprises: an electric power supply line 18 which is connected to a battery 13 via an ignition switch 14, a fuse box 15, a slip ring 16 and a coupler 17; an ignition circuit 20 which is connected to the electric power supply line 18 via a wrong operation preventing switch 21 to be described later and is made up by connecting to the inflating means 6, the first acceleration sensor 7 and the second acceleration sensor 8 in series via a coupler 19; and a backup capacitor 23 which is charged by a booster circuit 22 via a resistor 23a and is connected to the electric power supply line 18 via diodes 23b.
- Each of the acceleration sensors 7, 8 has connected in parallel thereto a bypass resistor 7a, 8a, respectively.
- the ignition circuit 20 is constantly charged with a weak electric current via these bypass resistors 7a, 8a.
- a monitor circuit 24 is provided for monitoring the electric potential between the inflating means 6 and the first acceleration sensor 7 which is connected to the side of grounding. From the changes in the electric potential, the failures such as the breaking of wire or short-circuit of the inflating means 6 or the acceleration sensors 7, 8 are detected.
- a signal from the monitor circuit 24 is input to a lamp circuit 25a of an alarm lamp 25 which is provided on an instrument panel to switch on the lamp 25 at the time of the failures.
- Numeral 26 denotes a monitoring electric power source.
- control box 9 there is contained an electric wiring circuit board 27. As shown in FIG. 5, there are provided on the circuit board 27 the above-described couplers 17, 19, the first and the second acceleration sensors 7, 8, the wrong operation preventing switch 21, the backup capacitor 23 and chips 24a for the monitor circuit 24.
- the control circuit for the inflating means 6 is thus arranged on the circuit board 27 as a unit.
- the wrong operation preventing switch 21 comprises, as shown in FIG. 2, a sliding member 21a which moves in interlocking with the mounting bolt 3 for the retainer 4 and a limit switch 21b which is operated in cooperation with the sliding member 21a.
- the sliding member 21a is moved outwards by a spring 21c as a result of its being released from the urging force of the bolt 3.
- the limit switch 21b is thereby changed over from the ON condition in which the electric power supply line 18 is connected to the ignition circuit 20 as shown by solid lines in FIG. 3, to the OFF condition in which the above-described electrical connection is cut off.
- the inflating means 6 when the air bag unit is removed, the electrical connection between the battery 13 as the main electric power supply as well as the capacitor 23 as the backup electric power supply and the inflating means 6 is cut off. Therefore, even if the acceleration sensors 7, 8 are switched on by a shock given to the air bag unit, the inflating means 6 does not operate.
- the apparatus comprises a short-circuiting circuit which detours an ignition circuit, and a switch which is interposed in the short-circuiting circuit and is switched on by the removal of the air bag unit. If this apparatus is supposed to be applied to the above-described air bag unit of this invention, the capacitor 23 is discharged through the short-circuiting circuit when the air bag unit is removed and, once the coupler 17 is detached, the inflating means 6 will never be operated thereafter even if the air bag unit were subjected to shocks.
- the coupler 17 is normally provided on the rear side of the air bag unit.
- the coupler 17 can be detached only after the air bag unit has been removed. It follows that if one fails to switch off the ignition switch 14, the electric current from the battery 13 flows through the short-circuiting circuit when the circuit is closed at the time of removing the air bag unit. Therefore, in order to prevent the overdischarging of the battery 13, the resistance of the short-circuiting circuit must be set to a relatively large value. As a result, even if the short-circuiting circuit is closed, there will remain a condition in which the ignition circuit 20 could be supplied with a relatively large amount of electric current. Therefore, there is a possibility that the inflating means 6 is operated when the air bag unit is subjected to shocks at the time of removing it. To prevent this inadvertent operation of the air bag unit, it becomes necessary to carry out the operation of removing the air bag unit carefully so as not to subject it to shocks, thus resulting in a long time required for the operation.
- the switch 21 is switched off at the time of removing the air bag unit, and the electrical connection between the battery 13 as well as the capacitor 23 and the ignition circuit 20 is cut off. Therefore, there is no possibility at all of the electric current's flowing through the ignition circuit 20. It follows that there is no need of paying extra attention at the time of removing the air bag unit, resulting in an easy removal work.
- the electric power supply line 18 is grounded as shown by imaginary lines in FIG. 3 via a discharging circuit 28 having interposed therein a resistor 28a so that the capacitor 23 is discharged through the discharging circuit 28.
- the resistance value of the discharging resistor 28a must be set at a high value in order to prevent the battery 13 from overdischarging when one has failed to switch off the ignition switch 14.
- the wrong operation preventing switch 21 is of a double-switch type having a first switch 21 1 and a second switch 21 2 , so that, at the time of removing the air bag unit, the electrical connection between the electric power supply line 18 and the ignition circuit 20 is cut off by the first switch 21 1 and a discharging line 23c directly connected to the capacitor 23 is connected to the discharging circuit 28 by the second switch 21 2 .
- the electric current from the battery 13 also flows through the discharging circuit 28 if one fails to switch off the ignition switch 14, this electric current flows through a charging resistor 23a for the capacitor 23.
- the overdischarging of the battery 13 can therefore be prevented by setting the resistance value of the charging resistor 23a at a large value. Accordingly, the discharging time of the capacitor 23 can be shortened by setting the resistance value of the discharging resistor 28a to a small value.
- the wrong operation preventing switch 21 is arranged to be changed over through the operation of the bolt 3.
- the changing over needs not be limited to the above-described embodiment; in stead, an arrangement may be employed in which, for example, the changing over is made by the movement in the axial direction of the air bag unit at the time of mounting or removing thereof.
- the above-described first acceleration sensor 7 comprises, as shown in FIGS. 6 through 8, a movable element 701 constituting a movable contact and a fixed contact 702 which is opposingly disposed in front of the movable element 701, both being enclosed inside a casing 700. It is so arranged that the movable element 701 is supported by a spring 703 which is made up of a spiral metallic plate so that the movable element 701 is moved forwards against the spring 703 through the inertia force at the time of crushing of the vehicle, thereby coming into contact with the fixed contact 702.
- a spring 703 which is made up of a spiral metallic plate so that the movable element 701 is moved forwards against the spring 703 through the inertia force at the time of crushing of the vehicle, thereby coming into contact with the fixed contact 702.
- a pair of a first and a second terminal plates 705, 706 are embedded in a diametrically opposite predetermined side portions of the base plate 704.
- Another pair of a third and a fourth terminal plates 707, 708 are embedded in a diametrically opposite side portions which are at right angles to a first and a second terminal plates 705, 706.
- the first and the third terminal plates 705, 707 are connected to a first and a second terminal pins 709, 710 respectively.
- the spring 703 is overlapped at its both ends with the first and the second terminal plates 705, 706. They are pressed together at a suitable fastening force by adjusting bolts 711 which screw into the base plate 704, and the movable element 701 is attached by fitting to the spring 703.
- the movable element 701 is electrically connected to the first terminal pin 709 through the first terminal plate 705 and the spring 703.
- a diaphragm 713 which closes a circular concave portion 712 formed in a front portion of the base plate 704, and an abutting plate 715 which abuts a projection 714 at the bottom of the concave portion 712 and receives the urging force of the spring 703.
- a variable orifice member 716 for restricting an air passage communicating to the concave portion 712, is provided in the base plate 704 so that an air damping effect to restrict the forward movement of the movable element 701 can be obtained by the orifice member 716 through the cooperation thereof with the diaphragm 713.
- a bent portion which extends towards the second connecting plate 718.
- the fixed contact 702 is constituted by a U-shaped tongue-like member, and both ends thereof are respectively caulked with the bent portions of the connecting plates 717, 718. It is thus so arranged that the fixed contact 702 is electrically connected to the second terminal pin 710 through the third terminal plate 707 and the first connecting plate 717.
- the above-described bypass resistor 7a is connected between the fourth terminal plate 708 which is connected to the fixed contact 702 through the second connecting plate 718, and the second terminal plate 706 which is connected to the movable element 701 through the spring 703.
- the bent portions of the connecting plates 717, 718 are buried into a resin block 719.
- the movable element 701 when the forward inertia force to be exerted to the movable element 701 exceeds the urging force of the spring 703 and the restricting force due to the above-described air damping effect, the movable element 701 is moved forwards to contact the fixed contact 702, so that the first acceleration sensor 7 becomes electrically conducted. In case where the fixed contact 702 or the spring 703 is damaged, there will flow no electric current through the bypass resistor 7a and the alarm lamp 25 will be switched on by the monitor circuit 24.
- the second acceleration sensor 8 comprises, as shown in FIG. 9, a movable element 801 which is made up of a ring-like magnet and is contained inside a casing 800 such that the movable element 801 externally surrounds a cylindrical holder 802 which is fixedly provided inside the casing 800.
- the movable element 801 is urged backwards by a spring 803.
- a lead switch 804 is embedded in a molded resin with the lead switch being inserted into the holder 802 and a pair of terminal pins 805, 806 which are connected to the respective ends of the lead switch 804 are projected towards the rear of the casing 800.
- the first and the second acceleration sensors 7, 8 are respectively mounted on the circuit board 27 such that the moving direction of each movable element 701, 801 becomes parallel with the axis of rotation of the steering wheel, i.e., the axial line of the steering shaft 1. Therefore, even if the position of each acceleration sensor 7, 8 is changed in accordance with the steering operation, the direction of movement of each movable element 701, 801 is maintained constant. The crushing detection capacity or characteristics of the respective acceleration sensors 7, 8 is not changed by the steering operation.
- the first and the second acceleration sensors 7, 8 are connected in series with the inflating means 6 being interposed therebetween to prevent the inflating means 6 from being wrongly ignited. It is however possible to connect the acceleration sensors 7, 8 in parallel. Further, two pieces of the first acceleration sensors 7 and two pieces of the second acceleration sensors 8 may, respectively, be connected in parallel with each other such that these two sets of parallelly connected circuits may be connected in series with the inflating means 6 being interposed therebetween. Furthermore, the accelerating sensors need not be limited to the above-described kinds. It will suffice if at least two pieces of accelerating sensors of different kinds are provided.
- the air bag apparatus is arranged in a unit inclusive of the acceleration sensors. Therefore, the ease of mounting the apparatus on the vehicle and the ease of maintenance thereof are improved.
- the electrically ignited type of air bag apparatus as set forth in claim 3 it has an advantage in that the wiring can be simplified by constituting it into a unit.
- the air bag unit since there are provided in the air bag unit a plurality of acceleration sensors of different kinds, there is little or no possibility of their going out of order all at the same time even if the plurality of acceleration sensors are placed in the same environmental conditions by making them into a unit. This brings about an advantage in that the reliability of the air bag apparatus is improved.
- the direction of movement of the movable element of each acceleration sensor is maintained constant even if the position of each of the acceleration sensors to be disposed inside the air bag unit is changed in accordance with the steering operation.
- the inflating means can be securely prevented from being operated at the time of removing the air bag unit.
- the inflating means can also be prevented from being operated by inadvertent operation of the switch or otherwise after the air bag unit has been removed. This has an advantage in that the mounting and removing operations of the air bag unit can be facilitated and that the storing, keeping, transporting or the like of the air bag unit becomes easy.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2-400891 | 1990-12-07 | ||
JP02400891A JP3122847B2 (ja) | 1990-12-07 | 1990-12-07 | 車両用エアバッグ装置 |
JP3137016A JP2612784B2 (ja) | 1991-05-14 | 1991-05-14 | 自動車用乗員拘束装置 |
JP3-137016 | 1991-05-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
US5257816A true US5257816A (en) | 1993-11-02 |
Family
ID=26470449
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/796,182 Expired - Fee Related US5257816A (en) | 1990-12-07 | 1991-11-22 | Air bag apparatus for vehicle |
Country Status (3)
Country | Link |
---|---|
US (1) | US5257816A (de) |
DE (1) | DE4140336C2 (de) |
GB (1) | GB2253506B (de) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5505483A (en) * | 1993-04-28 | 1996-04-09 | Nippondenso Co., Ltd. | Airbag safety module for vehicle |
US5577768A (en) * | 1993-04-28 | 1996-11-26 | Nippondenso Co., Ltd. | Air bag device having a minimized cone depth |
US5584501A (en) * | 1995-09-15 | 1996-12-17 | Trw Inc. | Vehicle occupant restraint apparatus |
US5593177A (en) * | 1995-01-17 | 1997-01-14 | Morton International, Inc. | Airbag module electric component attachment using studs |
US6026707A (en) * | 1995-03-16 | 2000-02-22 | Breed Automotive Technology, Inc. | Motor vehicle steering wheel provided with air bag protection device |
WO2000026606A1 (de) * | 1998-11-04 | 2000-05-11 | Siemens Aktiengesellschaft | Schaltung und verfahren zum zünden einer zündpille |
US6533316B2 (en) * | 1995-06-07 | 2003-03-18 | Automotive Technologies International, Inc. | Automotive electronic safety network |
US6733036B2 (en) | 1995-06-07 | 2004-05-11 | Automotive Technologies International, Inc. | Automotive electronic safety network |
EP1428731A1 (de) * | 2002-12-10 | 2004-06-16 | TRW Automotive Safety Systems GmbH | Kontrollsystem für Rastverbindungen einer Airbagvorrichtung |
US6905135B2 (en) | 1995-06-07 | 2005-06-14 | Automotive Technologies International, Inc. | Inflator system |
US20070299587A1 (en) * | 1995-10-30 | 2007-12-27 | Automotive Technologies International, Inc. | Vehicular Electrical System with Crash Sensors and Occupant Protection Systems |
US20080125940A1 (en) * | 1995-10-30 | 2008-05-29 | Automotive Technologies International, Inc. | Electronics-Containing Airbag Module |
WO2012121647A1 (en) * | 2011-03-07 | 2012-09-13 | Autoliv Development Ab | An airbag control arrangement |
US20130325323A1 (en) | 1998-10-22 | 2013-12-05 | American Vehicular Sciences | Vehicle software upgrade techniques |
US20140131984A1 (en) * | 2011-07-07 | 2014-05-15 | Matthias Zahn | Vehicle steering wheel, gas bag module for a vehicle steering wheel |
US9022417B2 (en) | 1995-12-12 | 2015-05-05 | American Vehicular Sciences Llc | Single side curtain airbag for vehicles |
US9443358B2 (en) | 1995-06-07 | 2016-09-13 | Automotive Vehicular Sciences LLC | Vehicle software upgrade techniques |
CN107302069A (zh) * | 2017-07-12 | 2017-10-27 | 浙江谷神能源科技股份有限公司 | 一种锂电池防摔装置 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5348340A (en) * | 1991-06-14 | 1994-09-20 | Breed Automotive Technology, Inc. | Air bag assembly for motor vehicles |
US5193846A (en) * | 1991-09-30 | 1993-03-16 | Morton International, Inc. | Air bag clamping device |
DE19948607C1 (de) * | 1999-10-08 | 2001-01-11 | Guenter Duerschinger | Zündeinrichtung für ein Insassen-Rückhaltesystem |
DE10106732B4 (de) * | 2000-02-29 | 2006-02-23 | Conti Temic Microelectronic Gmbh | Verfahren zum Betreiben eines Insassenschutzsystems |
DE10152270B4 (de) | 2001-10-20 | 2004-08-05 | Robert Bosch Gmbh | Schaltungsanordnung zur Entladung eines Bufferkondensators |
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JPS5442736A (en) * | 1977-09-08 | 1979-04-04 | Nippon Denso Co Ltd | Air bag starting apparatus |
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1991
- 1991-11-22 US US07/796,182 patent/US5257816A/en not_active Expired - Fee Related
- 1991-11-27 GB GB9125186A patent/GB2253506B/en not_active Expired - Fee Related
- 1991-12-06 DE DE4140336A patent/DE4140336C2/de not_active Expired - Fee Related
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US3871472A (en) * | 1972-02-23 | 1975-03-18 | Nissan Motor | Actuator of motor vehicle safety device |
JPS5442736A (en) * | 1977-09-08 | 1979-04-04 | Nippon Denso Co Ltd | Air bag starting apparatus |
FR2522302A1 (fr) * | 1982-02-27 | 1983-09-02 | Daimler Benz Ag | Dispositif de declenchement pour un dispositif de protection de passager |
US4700973A (en) * | 1983-08-04 | 1987-10-20 | Robert Bosch Gmbh | Trigger system for a vehicular passenger restraint system |
JPS63212149A (ja) * | 1987-02-26 | 1988-09-05 | Honda Motor Co Ltd | 自動車におけるエアバツグモジユ−ルの誤作動防止装置 |
JPS63212148A (ja) * | 1987-02-26 | 1988-09-05 | Honda Motor Co Ltd | 自動車におけるエアバツグモジユ−ルの誤作動防止装置 |
US5011181A (en) * | 1988-05-21 | 1991-04-30 | Messerschmitt-Boelkow-Blohm Gmbh | Steering wheel mounted air bag module including electromagnetically shielded sensor |
US5037129A (en) * | 1989-04-06 | 1991-08-06 | Robert Bosch Gmbh | Safety device for vehicle occupants |
US5080394A (en) * | 1989-09-12 | 1992-01-14 | Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho | Air bag device |
US5046149A (en) * | 1989-12-08 | 1991-09-03 | Delco Electronics Corporation | Inflatable restraint firing circuit diagnostics |
Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5577768A (en) * | 1993-04-28 | 1996-11-26 | Nippondenso Co., Ltd. | Air bag device having a minimized cone depth |
US5505483A (en) * | 1993-04-28 | 1996-04-09 | Nippondenso Co., Ltd. | Airbag safety module for vehicle |
US5593177A (en) * | 1995-01-17 | 1997-01-14 | Morton International, Inc. | Airbag module electric component attachment using studs |
US6026707A (en) * | 1995-03-16 | 2000-02-22 | Breed Automotive Technology, Inc. | Motor vehicle steering wheel provided with air bag protection device |
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Also Published As
Publication number | Publication date |
---|---|
GB9125186D0 (en) | 1992-01-29 |
DE4140336C2 (de) | 1996-06-27 |
GB2253506B (en) | 1994-07-27 |
GB2253506A (en) | 1992-09-09 |
DE4140336A1 (de) | 1992-06-11 |
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